git.sesse.net Git - vlc/blob - modules/stream_out/mosaic_bridge.c

   1 /*****************************************************************************
   2  * mosaic_bridge.c:
   3  *****************************************************************************
   4  * Copyright (C) 2004-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea@videolan.org>
   8  *          Christophe Massiot <massiot@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_block.h>
  37 #include <vlc_codec.h>
  38 #include <vlc_meta.h>
  39
  40 #include <vlc_image.h>
  41 #include <vlc_filter.h>
  42 #include <vlc_modules.h>
  43
  44 #include "../video_filter/mosaic.h"
  45
  46 /*****************************************************************************
  47  * Local structures
  48  *****************************************************************************/
  49 struct sout_stream_sys_t
  50 {
  51     bridged_es_t *p_es;
  52
  53     decoder_t       *p_decoder;
  54     image_handler_t *p_image; /* filter for resizing */
  55     int i_height, i_width;
  56     unsigned int i_sar_num, i_sar_den;
  57     char *psz_id;
  58     bool b_inited;
  59
  60     int i_chroma; /* force image format chroma */
  61
  62     filter_chain_t *p_vf2;
  63 };
  64
  65 struct decoder_owner_sys_t
  66 {
  67     /* Current format in use by the output */
  68     video_format_t video;
  69 };
  70
  71 /*****************************************************************************
  72  * Local prototypes
  73  *****************************************************************************/
  74 static int  Open    ( vlc_object_t * );
  75 static void Close   ( vlc_object_t * );
  76 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  77 static int               Del ( sout_stream_t *, sout_stream_id_t * );
  78 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
  79
  80 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
  81 inline static void video_del_buffer_filter( filter_t *, picture_t * );
  82
  83 inline static picture_t *video_new_buffer_decoder( decoder_t * );
  84 inline static picture_t *video_new_buffer_filter( filter_t * );
  85 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
  86                                     es_format_t * );
  87
  88 static void video_link_picture_decoder( decoder_t *, picture_t * );
  89 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
  90
  91 static int HeightCallback( vlc_object_t *, char const *,
  92                            vlc_value_t, vlc_value_t, void * );
  93 static int WidthCallback( vlc_object_t *, char const *,
  94                           vlc_value_t, vlc_value_t, void * );
  95 static int alphaCallback( vlc_object_t *, char const *,
  96                           vlc_value_t, vlc_value_t, void * );
  97 static int xCallback( vlc_object_t *, char const *,
  98                       vlc_value_t, vlc_value_t, void * );
  99 static int yCallback( vlc_object_t *, char const *,
 100                       vlc_value_t, vlc_value_t, void * );
 101
 102 /*****************************************************************************
 103  * Module descriptor
 104  *****************************************************************************/
 105 #define ID_TEXT N_("ID")
 106 #define ID_LONGTEXT N_( \
 107     "Specify an identifier string for this subpicture" )
 108
 109 #define WIDTH_TEXT N_("Video width")
 110 #define WIDTH_LONGTEXT N_( \
 111     "Output video width." )
 112 #define HEIGHT_TEXT N_("Video height")
 113 #define HEIGHT_LONGTEXT N_( \
 114     "Output video height." )
 115 #define RATIO_TEXT N_("Sample aspect ratio")
 116 #define RATIO_LONGTEXT N_( \
 117     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 118
 119 #define VFILTER_TEXT N_("Video filter")
 120 #define VFILTER_LONGTEXT N_( \
 121     "Video filters will be applied to the video stream." )
 122
 123 #define CHROMA_TEXT N_("Image chroma")
 124 #define CHROMA_LONGTEXT N_( \
 125     "Force the use of a specific chroma. Use YUVA if you're planning " \
 126     "to use the Alphamask or Bluescreen video filter." )
 127
 128 #define ALPHA_TEXT N_("Transparency")
 129 #define ALPHA_LONGTEXT N_( \
 130     "Transparency of the mosaic picture." )
 131
 132 #define X_TEXT N_("X offset")
 133 #define X_LONGTEXT N_( \
 134     "X coordinate of the upper left corner in the mosaic if non negative." )
 135
 136 #define Y_TEXT N_("Y offset")
 137 #define Y_LONGTEXT N_( \
 138     "Y coordinate of the upper left corner in the mosaic if non negative." )
 139
 140 #define CFG_PREFIX "sout-mosaic-bridge-"
 141
 142 vlc_module_begin ()
 143     set_shortname( N_( "Mosaic bridge" ) )
 144     set_description(N_("Mosaic bridge stream output") )
 145     set_capability( "sout stream", 0 )
 146     add_shortcut( "mosaic-bridge" )
 147
 148     add_string( CFG_PREFIX "id", "Id", ID_TEXT, ID_LONGTEXT,
 149                 false )
 150     add_integer( CFG_PREFIX "width", 0, WIDTH_TEXT,
 151                  WIDTH_LONGTEXT, true )
 152     add_integer( CFG_PREFIX "height", 0, HEIGHT_TEXT,
 153                  HEIGHT_LONGTEXT, true )
 154     add_string( CFG_PREFIX "sar", "1:1", RATIO_TEXT,
 155                 RATIO_LONGTEXT, false )
 156     add_string( CFG_PREFIX "chroma", NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 157                 false )
 158
 159     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 160                      NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false )
 161
 162     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255,
 163                             ALPHA_TEXT, ALPHA_LONGTEXT, false )
 164     add_integer( CFG_PREFIX "x", -1, X_TEXT, X_LONGTEXT, false )
 165     add_integer( CFG_PREFIX "y", -1, Y_TEXT, Y_LONGTEXT, false )
 166
 167     set_callbacks( Open, Close )
 168 vlc_module_end ()
 169
 170 static const char *const ppsz_sout_options[] = {
 171     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 172 };
 173
 174 /*****************************************************************************
 175  * Open
 176  *****************************************************************************/
 177 static int Open( vlc_object_t *p_this )
 178 {
 179     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 180     sout_stream_sys_t    *p_sys;
 181     vlc_value_t           val;
 182
 183     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 184                        p_stream->p_cfg );
 185
 186     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 187     if( !p_sys )
 188         return VLC_ENOMEM;
 189
 190     p_stream->p_sys = p_sys;
 191     p_sys->b_inited = false;
 192
 193     p_sys->psz_id = var_CreateGetString( p_stream, CFG_PREFIX "id" );
 194
 195     p_sys->i_height =
 196         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 197     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 198
 199     p_sys->i_width =
 200         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 201     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 202
 203     var_Get( p_stream, CFG_PREFIX "sar", &val );
 204     if( val.psz_string )
 205     {
 206         char *psz_parser = strchr( val.psz_string, ':' );
 207
 208         if( psz_parser )
 209         {
 210             *psz_parser++ = '\0';
 211             p_sys->i_sar_num = atoi( val.psz_string );
 212             p_sys->i_sar_den = atoi( psz_parser );
 213             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 214                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 215         }
 216         else
 217         {
 218             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 219             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 220         }
 221
 222         free( val.psz_string );
 223     }
 224     else
 225     {
 226         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 227     }
 228
 229     p_sys->i_chroma = 0;
 230     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 231     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 232     {
 233         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 234         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 235     }
 236     free( val.psz_string );
 237
 238 #define INT_COMMAND( a ) do { \
 239     var_Create( p_stream, CFG_PREFIX #a, \
 240                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 241     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 242                      p_stream ); } while(0)
 243     INT_COMMAND( alpha );
 244     INT_COMMAND( x );
 245     INT_COMMAND( y );
 246
 247 #undef INT_COMMAND
 248
 249     p_stream->pf_add    = Add;
 250     p_stream->pf_del    = Del;
 251     p_stream->pf_send   = Send;
 252
 253     p_stream->p_sout->i_out_pace_nocontrol++;
 254
 255     return VLC_SUCCESS;
 256 }
 257
 258 /*****************************************************************************
 259  * Close
 260  *****************************************************************************/
 261 static void Close( vlc_object_t * p_this )
 262 {
 263     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 264     sout_stream_sys_t *p_sys = p_stream->p_sys;
 265
 266     /* Delete the callbacks */
 267     var_DelCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 268     var_DelCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 269     var_DelCallback( p_stream, CFG_PREFIX "alpha", alphaCallback, p_stream );
 270     var_DelCallback( p_stream, CFG_PREFIX "x", xCallback, p_stream );
 271     var_DelCallback( p_stream, CFG_PREFIX "y", yCallback, p_stream );
 272
 273     p_stream->p_sout->i_out_pace_nocontrol--;
 274
 275     free( p_sys->psz_id );
 276
 277     free( p_sys );
 278 }
 279
 280 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 281 {
 282     p_filter->pf_video_buffer_new = video_new_buffer_filter;
 283     p_filter->pf_video_buffer_del = video_del_buffer_filter;
 284     p_filter->p_owner = p_data;
 285     return VLC_SUCCESS;
 286 }
 287
 288 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 289 {
 290     sout_stream_sys_t *p_sys = p_stream->p_sys;
 291     bridge_t *p_bridge;
 292     bridged_es_t *p_es;
 293     char *psz_chain;
 294     int i;
 295
 296     if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
 297         return NULL;
 298
 299     /* Create decoder object */
 300     p_sys->p_decoder = vlc_object_create( p_stream, sizeof( decoder_t ) );
 301     if( !p_sys->p_decoder )
 302         return NULL;
 303     p_sys->p_decoder->p_module = NULL;
 304     p_sys->p_decoder->fmt_in = *p_fmt;
 305     p_sys->p_decoder->b_pace_control = false;
 306     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 307     p_sys->p_decoder->fmt_out.i_extra = 0;
 308     p_sys->p_decoder->fmt_out.p_extra = 0;
 309     p_sys->p_decoder->pf_decode_video = 0;
 310     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 311     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 312     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 313     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 314     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 315     if( !p_sys->p_decoder->p_owner )
 316     {
 317         vlc_object_release( p_sys->p_decoder );
 318         return NULL;
 319     }
 320
 321     p_sys->p_decoder->p_owner->video = p_fmt->video;
 322     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 323
 324     p_sys->p_decoder->p_module =
 325         module_need( p_sys->p_decoder, "decoder", "$codec", false );
 326
 327     if( !p_sys->p_decoder->p_module || !p_sys->p_decoder->pf_decode_video )
 328     {
 329         if( p_sys->p_decoder->p_module )
 330         {
 331             msg_Err( p_stream, "instanciated a non video decoder" );
 332             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 333         }
 334         else
 335         {
 336             msg_Err( p_stream, "cannot find decoder" );
 337         }
 338         free( p_sys->p_decoder->p_owner );
 339         vlc_object_release( p_sys->p_decoder );
 340         return NULL;
 341     }
 342
 343     p_sys->b_inited = true;
 344     vlc_global_lock( VLC_MOSAIC_MUTEX );
 345
 346     p_bridge = GetBridge( p_stream );
 347     if ( p_bridge == NULL )
 348     {
 349         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 350         vlc_value_t val;
 351
 352         p_bridge = xmalloc( sizeof( bridge_t ) );
 353
 354         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 355         val.p_address = p_bridge;
 356         var_Set( p_libvlc, "mosaic-struct", val );
 357
 358         p_bridge->i_es_num = 0;
 359         p_bridge->pp_es = NULL;
 360     }
 361
 362     for ( i = 0; i < p_bridge->i_es_num; i++ )
 363     {
 364         if ( p_bridge->pp_es[i]->b_empty )
 365             break;
 366     }
 367
 368     if ( i == p_bridge->i_es_num )
 369     {
 370         p_bridge->pp_es = xrealloc( p_bridge->pp_es,
 371                           (p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
 372         p_bridge->i_es_num++;
 373         p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
 374     }
 375
 376     p_sys->p_es = p_es = p_bridge->pp_es[i];
 377
 378     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 379     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 380     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 381
 382     //p_es->fmt = *p_fmt;
 383     p_es->psz_id = p_sys->psz_id;
 384     p_es->p_picture = NULL;
 385     p_es->pp_last = &p_es->p_picture;
 386     p_es->b_empty = false;
 387
 388     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 389
 390     if ( p_sys->i_height || p_sys->i_width )
 391     {
 392         p_sys->p_image = image_HandlerCreate( p_stream );
 393     }
 394     else
 395     {
 396         p_sys->p_image = NULL;
 397     }
 398
 399     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 400
 401     /* Create user specified video filters */
 402     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 403     msg_Dbg( p_stream, "psz_chain: %s", psz_chain );
 404     if( psz_chain )
 405     {
 406         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 407                                          video_filter_buffer_allocation_init,
 408                                          NULL, p_sys->p_decoder->p_owner );
 409         es_format_t fmt;
 410         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 411         if( p_sys->i_chroma )
 412             fmt.video.i_chroma = p_sys->i_chroma;
 413         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 414         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 415         free( psz_chain );
 416     }
 417     else
 418     {
 419         p_sys->p_vf2 = NULL;
 420     }
 421
 422     return (sout_stream_id_t *)p_sys;
 423 }
 424
 425 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 426 {
 427     VLC_UNUSED(id);
 428     sout_stream_sys_t *p_sys = p_stream->p_sys;
 429     bridge_t *p_bridge;
 430     bridged_es_t *p_es;
 431     bool b_last_es = true;
 432     int i;
 433
 434     if( !p_sys->b_inited )
 435         return VLC_SUCCESS;
 436
 437     if( p_sys->p_decoder != NULL )
 438     {
 439         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 440
 441         if( p_sys->p_decoder->p_module )
 442             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 443         if( p_sys->p_decoder->p_description )
 444             vlc_meta_Delete( p_sys->p_decoder->p_description );
 445
 446         vlc_object_release( p_sys->p_decoder );
 447
 448         free( p_owner );
 449     }
 450
 451     /* Destroy user specified video filters */
 452     if( p_sys->p_vf2 )
 453         filter_chain_Delete( p_sys->p_vf2 );
 454
 455     vlc_global_lock( VLC_MOSAIC_MUTEX );
 456
 457     p_bridge = GetBridge( p_stream );
 458     p_es = p_sys->p_es;
 459
 460     p_es->b_empty = true;
 461     while ( p_es->p_picture )
 462     {
 463         picture_t *p_next = p_es->p_picture->p_next;
 464         picture_Release( p_es->p_picture );
 465         p_es->p_picture = p_next;
 466     }
 467
 468     for ( i = 0; i < p_bridge->i_es_num; i++ )
 469     {
 470         if ( !p_bridge->pp_es[i]->b_empty )
 471         {
 472             b_last_es = false;
 473             break;
 474         }
 475     }
 476
 477     if ( b_last_es )
 478     {
 479         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 480         for ( i = 0; i < p_bridge->i_es_num; i++ )
 481             free( p_bridge->pp_es[i] );
 482         free( p_bridge->pp_es );
 483         free( p_bridge );
 484         var_Destroy( p_libvlc, "mosaic-struct" );
 485     }
 486
 487     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 488
 489     if ( p_sys->p_image )
 490     {
 491         image_HandlerDelete( p_sys->p_image );
 492     }
 493
 494     p_sys->b_inited = false;
 495
 496     return VLC_SUCCESS;
 497 }
 498
 499 /*****************************************************************************
 500  * PushPicture : push a picture in the mosaic-struct structure
 501  *****************************************************************************/
 502 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 503 {
 504     sout_stream_sys_t *p_sys = p_stream->p_sys;
 505     bridged_es_t *p_es = p_sys->p_es;
 506
 507     vlc_global_lock( VLC_MOSAIC_MUTEX );
 508
 509     *p_es->pp_last = p_picture;
 510     p_picture->p_next = NULL;
 511     p_es->pp_last = &p_picture->p_next;
 512
 513     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 514 }
 515
 516 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 517                  block_t *p_buffer )
 518 {
 519     sout_stream_sys_t *p_sys = p_stream->p_sys;
 520     picture_t *p_pic;
 521
 522     if ( (sout_stream_sys_t *)id != p_sys )
 523     {
 524         block_ChainRelease( p_buffer );
 525         return VLC_SUCCESS;
 526     }
 527
 528     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 529                                                         &p_buffer )) )
 530     {
 531         picture_t *p_new_pic;
 532
 533         if( p_sys->i_height || p_sys->i_width )
 534         {
 535             video_format_t fmt_out, fmt_in;
 536
 537             memset( &fmt_in, 0, sizeof(video_format_t) );
 538             memset( &fmt_out, 0, sizeof(video_format_t) );
 539             fmt_in = p_sys->p_decoder->fmt_out.video;
 540
 541
 542             if( p_sys->i_chroma )
 543                 fmt_out.i_chroma = p_sys->i_chroma;
 544             else
 545                 fmt_out.i_chroma = VLC_CODEC_I420;
 546
 547             const unsigned i_fmt_in_aspect =
 548                 (int64_t)VOUT_ASPECT_FACTOR *
 549                 fmt_in.i_sar_num * fmt_in.i_width /
 550                 (fmt_in.i_sar_den * fmt_in.i_height);
 551             if ( !p_sys->i_height )
 552             {
 553                 fmt_out.i_width = p_sys->i_width;
 554                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 555                     * p_sys->i_sar_num / p_sys->i_sar_den / i_fmt_in_aspect)
 556                       & ~0x1;
 557             }
 558             else if ( !p_sys->i_width )
 559             {
 560                 fmt_out.i_height = p_sys->i_height;
 561                 fmt_out.i_width = (p_sys->i_height * i_fmt_in_aspect
 562                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 563                       & ~0x1;
 564             }
 565             else
 566             {
 567                 fmt_out.i_width = p_sys->i_width;
 568                 fmt_out.i_height = p_sys->i_height;
 569             }
 570             fmt_out.i_visible_width = fmt_out.i_width;
 571             fmt_out.i_visible_height = fmt_out.i_height;
 572
 573             p_new_pic = image_Convert( p_sys->p_image,
 574                                        p_pic, &fmt_in, &fmt_out );
 575             if( p_new_pic == NULL )
 576             {
 577                 msg_Err( p_stream, "image conversion failed" );
 578                 picture_Release( p_pic );
 579                 continue;
 580             }
 581         }
 582         else
 583         {
 584             /* TODO: chroma conversion if needed */
 585
 586             p_new_pic = picture_New( p_pic->format.i_chroma,
 587                                      p_pic->format.i_width, p_pic->format.i_height,
 588                                      p_sys->p_decoder->fmt_out.video.i_sar_num,
 589                                      p_sys->p_decoder->fmt_out.video.i_sar_den );
 590             if( !p_new_pic )
 591             {
 592                 picture_Release( p_pic );
 593                 msg_Err( p_stream, "image allocation failed" );
 594                 continue;
 595             }
 596
 597             picture_Copy( p_new_pic, p_pic );
 598         }
 599         picture_Release( p_pic );
 600
 601         if( p_sys->p_vf2 )
 602             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 603
 604         PushPicture( p_stream, p_new_pic );
 605     }
 606
 607     return VLC_SUCCESS;
 608 }
 609
 610 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 611 {
 612     return video_new_buffer( VLC_OBJECT( p_dec ),
 613                              (decoder_owner_sys_t *)p_dec->p_owner,
 614                              &p_dec->fmt_out );
 615 }
 616
 617 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 618 {
 619     return video_new_buffer( VLC_OBJECT( p_filter ),
 620                              (decoder_owner_sys_t *)p_filter->p_owner,
 621                              &p_filter->fmt_out );
 622 }
 623
 624 static picture_t *video_new_buffer( vlc_object_t *p_this,
 625                                     decoder_owner_sys_t *p_sys,
 626                                     es_format_t *fmt_out )
 627 {
 628     VLC_UNUSED(p_this);
 629     if( fmt_out->video.i_width != p_sys->video.i_width ||
 630         fmt_out->video.i_height != p_sys->video.i_height ||
 631         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 632         (int64_t)fmt_out->video.i_sar_num * p_sys->video.i_sar_den !=
 633         (int64_t)fmt_out->video.i_sar_den * p_sys->video.i_sar_num )
 634     {
 635         vlc_ureduce( &fmt_out->video.i_sar_num,
 636                      &fmt_out->video.i_sar_den,
 637                      fmt_out->video.i_sar_num,
 638                      fmt_out->video.i_sar_den, 0 );
 639
 640         if( !fmt_out->video.i_visible_width ||
 641             !fmt_out->video.i_visible_height )
 642         {
 643             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 644             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 645         }
 646
 647         fmt_out->video.i_chroma = fmt_out->i_codec;
 648         p_sys->video = fmt_out->video;
 649     }
 650
 651     /* */
 652     fmt_out->video.i_chroma = fmt_out->i_codec;
 653
 654     return picture_NewFromFormat( &fmt_out->video );
 655 }
 656
 657 inline static void video_del_buffer_decoder( decoder_t *p_this,
 658                                              picture_t *p_pic )
 659 {
 660     VLC_UNUSED(p_this);
 661     picture_Release( p_pic );
 662 }
 663
 664 inline static void video_del_buffer_filter( filter_t *p_this,
 665                                             picture_t *p_pic )
 666 {
 667     VLC_UNUSED(p_this);
 668     picture_Release( p_pic );
 669 }
 670
 671 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 672 {
 673     VLC_UNUSED(p_dec);
 674     picture_Hold( p_pic );
 675 }
 676
 677 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 678 {
 679     VLC_UNUSED(p_dec);
 680     picture_Release( p_pic );
 681 }
 682
 683
 684 /**********************************************************************
 685  * Callback to update (some) params on the fly
 686  **********************************************************************/
 687 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 688                            vlc_value_t oldval, vlc_value_t newval,
 689                            void *p_data )
 690 {
 691     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 692     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 693     sout_stream_sys_t *p_sys = p_stream->p_sys;
 694
 695     /* We create the handler before updating the value in p_sys
 696      * so we don't have to worry about locking */
 697     if( !p_sys->p_image && newval.i_int )
 698         p_sys->p_image = image_HandlerCreate( p_stream );
 699     p_sys->i_height = newval.i_int;
 700
 701     return VLC_SUCCESS;
 702 }
 703
 704 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 705                            vlc_value_t oldval, vlc_value_t newval,
 706                            void *p_data )
 707 {
 708     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 709     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 710     sout_stream_sys_t *p_sys = p_stream->p_sys;
 711
 712     /* We create the handler before updating the value in p_sys
 713      * so we don't have to worry about locking */
 714     if( !p_sys->p_image && newval.i_int )
 715         p_sys->p_image = image_HandlerCreate( p_stream );
 716     p_sys->i_width = newval.i_int;
 717
 718     return VLC_SUCCESS;
 719 }
 720
 721 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 722                           vlc_value_t oldval, vlc_value_t newval,
 723                           void *p_data )
 724 {
 725     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 726     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 727     sout_stream_sys_t *p_sys = p_stream->p_sys;
 728
 729     if( p_sys->p_es )
 730         p_sys->p_es->i_alpha = newval.i_int;
 731
 732     return VLC_SUCCESS;
 733 }
 734
 735 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 736                       vlc_value_t oldval, vlc_value_t newval,
 737                       void *p_data )
 738 {
 739     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 740     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 741     sout_stream_sys_t *p_sys = p_stream->p_sys;
 742
 743     if( p_sys->p_es )
 744         p_sys->p_es->i_x = newval.i_int;
 745
 746     return VLC_SUCCESS;
 747 }
 748
 749 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 750                       vlc_value_t oldval, vlc_value_t newval,
 751                       void *p_data )
 752 {
 753     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 754     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 755     sout_stream_sys_t *p_sys = p_stream->p_sys;
 756
 757     if( p_sys->p_es )
 758         p_sys->p_es->i_y = newval.i_int;
 759
 760     return VLC_SUCCESS;
 761 }